X. DongJan. 6th, 2011 HF Workshop, Purdue
Future Heavy Flavor Program
at STAR
Xin Dong
for the STAR CollaborationLawrence Berkeley National Lab
2X. DongJan. 6th, 2011 HF Workshop, Purdue
Heavy Ion Frontiers
1 Quantify the medium properties
LHC
3X. DongJan. 6th, 2011 HF Workshop, Purdue
Outline
Physics Motivations
STAR Approach and Detector Upgrade Plans
Physics Capabilities of Future HF Measurements
Summary
4X. DongJan. 6th, 2011 HF Workshop, Purdue
What we’ve learned
A hot and dense matter with strong partonic collectivity has been formed at RHIC!
STAR: NPA 757, 102 (2005); QM2009
High pT: Jet quenching
Low pT: Hydrodynamic behaviorMulti-strange hadrons flow
Intermediate pT: Number of Constituent Quark scalingMulti-strange hadrons flow as light hadrons
5X. DongJan. 6th, 2011 HF Workshop, Purdue
STAR PRL 98 (2007) 192301
Heavy Quark E in hot QCD medium
Heavy quark decay electrons - mixture of charm and bottom decays
RAA(e) ~ RAA(h)
Contradict to the naïve radiative energy loss mechanism
Re-visit the energy loss mechanisms Require direct measurements of charm or bottom hadrons for clear understanding
6X. DongJan. 6th, 2011 HF Workshop, Purdue
Heavy Quarks to Probe Early Thermalization
B. Mueller, nucl-th/0404015 Heavy quarks created at early stage of HIC, and sensitive to the partonic re-scatterings. Heavy quark collectivity/flow to quantify the thermalization degree at the top energy. Thermalization - essential to the RHIC Beam Energy Scan program.
charm quarks
7X. DongJan. 6th, 2011 HF Workshop, Purdue
Heavy Quarkonia - QGP Thermometer
O. Kaczmarek & F. Zantow, PRD 71 (2005) 114510
2-Flavor QCD
A. Mocsy & P.Petreczky, PRL 99 (2007) 211602
T/TC 1/r [fm-1]
(1S)
J/(1S) ’(2S)
c(1P)’ (2S)b’(2P) ’’(3S)TC
2
1.2
b(1P)
Quarkonia suppression due to color screening - a classic QGP signatureT. Matsui and H. Satz, PLB 178 (1986) 416
Sequential dissociation - Quarkonia as a QGP thermometerH. Satz, NPA 783 (2007) 249c; A. Mocsy & P. Petreczky, PRL 99 (2007) 211602
8X. DongJan. 6th, 2011 HF Workshop, Purdue
STAR Approach
Detection capability at mid-rapidity, full azimuth
large and uniform acceptance
allowing precision correlation measurements
1) Direct topological reconstruction of open charmed hadrons in HI collisions• No ambiguities in the charm hadron kinematics• No ambiguities in the charm/bottom hadron mixture• Significantly improved significance by reconstructing the secondary decay vertices.
2) Quarkonia measurements via both di-electron/di-muon channels• Triggerable di-muon channel to sample full luminosity• No bremmestrahlung tail in di-muon channel so allow separation of three Upsilon states
STAR Decadal Plan Documents:http://www.bnl.gov/npp/docs/STAR_Decadal_Plan_Final%5B1%5D.pdf
9X. DongJan. 6th, 2011 HF Workshop, Purdue
STAR Detector
10X. DongJan. 6th, 2011 HF Workshop, Purdue
Full Barrel Time-Of-Flight
|1/-1|<0.03
Full barrel completed for Run 10.
- Extended hadron PID to intermediate pT
- TOF/TPC allows electron PID down to very low momentum
Bring benefits to both open HF and quarkonia program in the future.
11X. DongJan. 6th, 2011 HF Workshop, Purdue
TPC Volume
Outer Field Cage
Inner Field CageSSDISTPXL
FGT
HFT
Heavy Flavor Tracker (HFT)
12X. DongJan. 6th, 2011 HF Workshop, Purdue
HFT consists of 3 sub-detector systems inside the STAR Inner Field Cage (IFC)
Heavy Flavor Tracker
DetectorRadius
(cm)Hit Resolution
R/ - Z (m - m)Radiation
length
SSD 22 30 / 860 1% X0
IST 14 170 / 1800 1.32 %X0
PIXEL8 8 / 8 ~0.37 %X0
2.5 8 / 8 ~0.37% X0
SSD existing single layer detector, double side strips (electronic upgrade)
IST one layer of silicon strips along beam direction, guiding tracks from the SSD through PIXEL detector. - proven strip technology
PIXEL double layers, 18.4x18.4 m pixel pitch, 2 cm x 20 cm each ladder, 10 ladders, delivering ultimate pointing resolution. - new active pixel technology
13X. DongJan. 6th, 2011 HF Workshop, Purdue
2.5 cm radius
8 cm radius
Inner layer
Outer layer
End view
One of two half cylinders
20 cm
coverage +-1total 40 ladders
Pixel Geometry
14X. DongJan. 6th, 2011 HF Workshop, Purdue
Pointing resolution (12 19GeV/pc) m
Layers Layer 1 at 2.5 cm radiusLayer 2 at 8 cm radius
Pixel size 18.4 m X 18.4 m
Hit resolution 8 m rms
Position stability 6 m (20 m envelope)
Radiation thickness per layer
X/X0 = 0.37%
Number of pixels 436 M
Integration time (affects pileup) 0.2 ms
Radiation requirement
20-90 kRad
Rapid detector replacement
< 8 Hours
criticalanddifficult
more than a factor of 3 better than other vertex detectors (ATLAS, ALICE and PHENIX)
Some pixel features and specifications
15X. DongJan. 6th, 2011 HF Workshop, Purdue
A detector with long-MRPCs covers thewhole iron bars and leave the gaps in- between uncovered. Acceptance: ||<0.5 and 45% in azimuth
118 modules, 1416 readout strips, 2832 readoutchannels
Long-MRPC detector technology, HPTDCelectronics (same as STAR-TOF)
Muon Telescope Detector (MTD)
16X. DongJan. 6th, 2011 HF Workshop, Purdue
Total resolution: 109 psMTD intrinsic resolution: 96 ps
satisfying the design goal
System spatial resolution: 2.5 cm, dominated by multiple scattering
expected from simulation
σ: 109 ps
σ: 2.5 cm
pure muonspT: ~6 GeV/c
MTD (Run 10 Prototype) Performance
position difference (cm)
17X. DongJan. 6th, 2011 HF Workshop, Purdue
di-muon pairs from heavy quarkonia decays
single muons from the semi-leptonic decays of heavy flavor hadrons
e-mu correlations to distinguish HF production from initial di-lepton production
Advantages over electron channels: no conversion, much less Dalitz decay contribution
Much less combinatorial backgroundless affected by radiative losses in the detector materials
excellent mass resolution, allowing separation of three Upsilon statestriggerable in Au+Au
sample full luminosity from low to high pT for J/ in central AA collisions
MTD Detecting Probes
18X. DongJan. 6th, 2011 HF Workshop, Purdue
Upgrade Schedule
2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 …
DAQ1k
TOF
HFT
MTD
RHIC II
19X. DongJan. 6th, 2011 HF Workshop, Purdue
Future Open HF Measurements
HFT + TPC + TOFtopological reconstruction of all ground state charmed hadrons
HFT + TPC + TOF + EMC/MTDsingle electron/muon from semi-leptonic decays of charm/bottom hadrons
- with HFT allows to separate charm/bottom contributionse or mu induced correlation measurements
20X. DongJan. 6th, 2011 HF Workshop, Purdue
RCP=a*N10%/N(60-80)%
Physics Projections
Assuming D0 v2 distribution from quark coalescence.
500M Au+Au m.b. events at 200 GeV. - Charm v2
Thermalization degree!Drag coefficients!
Assuming D0 Rcp distribution as charged hadron
500M Au+Au m.b. events at 200 GeV.- Charm RAA Energy loss mechanism! Interaction with QCD matter!
21X. DongJan. 6th, 2011 HF Workshop, Purdue
Charm Baryons
cpK Lowest mass charm baryons c = 60 m
c/D enhancement? 0.11 (pp PYTHIA) 0.4-0.9 (Di-quark correlation in QGP)
S.H. Lee etc. PRL 100 (2008) 222301 Total charm yield in heavy ion collisions
22X. DongJan. 6th, 2011 HF Workshop, Purdue
Access Bottom Production via Electrons
Two approaches:
a) Statistical fit with model assumptions
b) With known charm hadron spectrum
to constrain or be used in subtraction
(a) HQ decay electrons spectra/v2
Charm hadron spectra/v2
Charm decay electron spectra/v2
Bottom decay electron spectra / v2
(b)
23X. DongJan. 6th, 2011 HF Workshop, Purdue
Curves: H. van Hees et al. Eur. Phys. J. C 61 (2009) 799
Statistical Projections on eB Spectra / v2
(Be) spectra obtained via the subtraction of charm decay electrons from inclusive NPEs: no model dependence, reduced systematic errors.
24X. DongJan. 6th, 2011 HF Workshop, Purdue
e correlation with Muon Telescope Detector at STAR from ccbar: S/B=2 (Meu>3 GeV/c2 and pT(e)<2 GeV/c) S/B=8 with electron pairing and tof association
L. Ruan et al., JPG 36 (2009) 095001
e-mu correlations
ccbarDrell-YanThermal radiation
25X. DongJan. 6th, 2011 HF Workshop, Purdue
Heavy Quarkonia Program
A) Up to 2013 (TPC+TOF+EMC)
Charmonia:low pT from minibias sample - limited statisticshigh pT from single electron HT trigger - efficient and can sample the full luminosity
will carry on at RHIC IIBottomonia:
di-electron channel - material effect from inner tracker / limited statistics
B) 2014 and beyond (HFT+TPC+TOF+EMC+MTD)
Charmonia:di-muon channel covers from low to high pT
high pT from single electron HT triggerBottomonia:
di-muon channel - excellent in mass resolution and able to sample full luminositydi-electron channel within HFT acceptance - limited statistics
26X. DongJan. 6th, 2011 HF Workshop, Purdue
Heavy Quarkonia via di-electrons
Run7 AuAu 300 ub-1
Run 6 p+p 8 pb-1
Run 7 Au+Au 300 ub-1
Run 9 p+p 20 pb-1
Run 10 Au+Au 1.4 nb-1
Limited statistics -> Multi year physics program
R. Reed, HP 2010STAR, PRC80 (2009) 041902(R)
J/
Single electron HT trigger to reach high pT J/
27X. DongJan. 6th, 2011 HF Workshop, Purdue
J/ efficiency
1. muon efficiency at |η|<0.5: 36%, pion efficiency: 0.5-1% at pT>2 GeV/c2. dimuon trigger enhancement factor from online trigger: 40-200 in central
Au+Au collisions
J/ with MTD
28X. DongJan. 6th, 2011 HF Workshop, Purdue
Upsilon Mass Resolution with MTD
Di-electrons with material from inner tracker
Di-electrons with no material from inner trackerDi-muons from any case
2008 to 2013: di-electrons are a good probe for Upsilonshowever, limited by statistics / luminosity
2014 - : di-electrons suffer from inner HFT material - hard to separate three states di-muons will be a great probe to measure different Upsilon states with RHIC II
29X. DongJan. 6th, 2011 HF Workshop, Purdue
Υ
J/ RAA and v2
Υ RAA vs. Npart
J/
J/
Projections on Quarkonia Measurements
30X. DongJan. 6th, 2011 HF Workshop, Purdue
BJ/ + X with HFT+TPC+MTD
Prompt J/
J/ from B
HFT to separate B decay J/ from prompt J/ MTD to reconstruct J/ from di-muon decays
31X. DongJan. 6th, 2011 HF Workshop, Purdue
Charm to Probe Nucleon/Nucleus Structure
K.Kurek, Spin Workshop @LBL 2009
32X. DongJan. 6th, 2011 HF Workshop, Purdue
Summary
Heavy flavor physics will be one of the key measurements in quantifying the medium properties at the RHIC II era.
STAR HFT and MTD upgrades together with existing subsystems allow precision measurements on both open heavy flavor and quarkonia production at mid-rapidity with RHIC II luminosities.
STAR Decadal Plan:
http://www.bnl.gov/npp/docs/STAR_Decadal_Plan_Final%5B1%5D.pdf
Continue the ongoing heavy ion and spin programs with pp, pA and AA Complement with ep and eA programs / evolve to eSTAR@eRHIC
BACKUP SLIDES
34X. DongJan. 6th, 2011 HF Workshop, Purdue
Measure production rates, high pT spectra, and correlations in heavy-ion collisions at sNN = 200 GeV for identified hadrons with heavy flavor valence quarks to constrains the mechanism for parton energy loss in the quark-gluon plasma
DOE milestone 2016
35X. DongJan. 6th, 2011 HF Workshop, Purdue
Lee, et. al, PRL 100 (2008) 222301
Direct (hard) fragmentation in elementary collisions. However, in heavy ion collisions …
Charm Quark Hadronization
V. Greco et al., PLB 595(2004)202
Coalescence approach
Charm baryon enhancement ? - coalescence of c and di-quark
36X. DongJan. 6th, 2011 HF Workshop, Purdue
Charm cross section
STAR, PRL 94 (2005) 062301, arXiv: 0805.0364, QM08PHENIX, PRL 96 (2006) 032001, 96 (2006) 032301, 97 (2006) 252002, PRD 76 (2007) 092002, QM08
Big experimental (statistical & systematical) uncertainties Extrapolated from electron channel Hadronic channel suffered huge combinatorial background No knowledge about charm chemistry
Need precision measurements on various charm hadrons via displaced vertices
37X. DongJan. 6th, 2011 HF Workshop, Purdue
Electrons - Incomplete Kinematics
New micro-vertex detector is needed for precision measurements on charmed hadrons production in heavy ion collisions
38X. DongJan. 6th, 2011 HF Workshop, Purdue
Summary
MTD will advance our knowledge of Quark Gluon Plasma: trigger capability for low to high pT J/ in central Au+Au collsions
excellent mass resolution, separate different upsilon states
e-muon correlation to distinguish heavy flavor production from initial lepton pair production
rare decay and exotics …
different background contribution provides complementary measurements for dileptons The prototype of MTD works at STAR from Run 7 to Run 10. Results published at L. Ruan
et al., Journal of Physics G: Nucl. Part. Phys. 36 (2009) 095001; 0904.3774; Y. Sun et al., NIMA 593 (2008) 430.
muon purity>80%; the primary muon over secondary muon ratio: good
for quarkonium program
the trigger capability with L0 and L2: promising for dimuon program:
Upsilon, J/ elliptic flow v2 and RAA at high pT
The larger Run 11 modules with slightly wider readout strips show a comparable performance as the modules in Runs 7-10, based on cosmic ray tests at USTC and Tsinghua.
39X. DongJan. 6th, 2011 HF Workshop, Purdue
Monolithic Active Pixel Sensor (MAPS) from IPHC Commercial CMOS technology Thin - 50 m silicon Small pixels, high resolution Fast readout
Air cooling Mechanical stability
Hybrid uncertainty area--------------------------------MAPS uncertainty area
pointing accuracy comparison
Pixel Technology
Hybrid: 50 x 450 1.2% X0
MAPS: 18.4 x 18.4 0.37% X0
40X. DongJan. 6th, 2011 HF Workshop, Purdue
Alternate Technologies Considered
Hybrid X0 large (1.2%)
Pixel Size large (50 m x 450 m) Specialized manufacturing - not readily available
CCDs Limited radiation tolerance Slow frame rate, pileup issues Specialized manufacturing
DEPFET Specialized manufacturing very aggressive unproven technology
41X. DongJan. 6th, 2011 HF Workshop, Purdue
Pointing Resolution Performance
2 2
GEANT: Realistic detector geometry + Standard STAR trackingincluding the pixel pileup hits at RHIC-II luminosity
Hand Calculation: Multiple Coulomb Scattering + Detector hit resolutionPXL telescope limit: Two PIXEL layers only, hit resolution only
Mean pT
30 m
42X. DongJan. 6th, 2011 HF Workshop, Purdue
Reconstruction of Displaced Vertices
D0 decays
particle c (m) Mass (GeV)
D0 123 1.865
D+ 312 1.869
Ds+ 150 1.968
c+ 60 2.286
B0 459 5.279
B+ 491 5.279
Direct topological reconstruction of charm and bottom decays
43X. DongJan. 6th, 2011 HF Workshop, Purdue
Efficiency / SignificanceNeed New plots
D0 spectrum covering 0.5 - ~10 GeV/c in one RHIC run
44X. DongJan. 6th, 2011 HF Workshop, Purdue
Al vs. Cu Cable
Thin: Aluminum (0.37% X0)Thick: Copper (0.52% X0)
Aluminum cable will improve the low pT significance by ~ 1.5- running time need to be ~ 2 times longer to achieve the same precision
45X. DongJan. 6th, 2011 HF Workshop, Purdue
More Charm Hadrons
D+KMass = 1.869 MeV
c=312m
46X. DongJan. 6th, 2011 HF Workshop, Purdue
B capability -- electron channels
particle c (m) Mass (GeV)
qc,b →x (F.R.)
x →e (B.R.)
D0 123 1.865 0.54 0.0671
D± 312 1.869 0.21 0.172
B0 459 5.279 0.40 0.104
B 491 5.279 0.40 0.109
1) Be = NPE De
2) The distance of closest approach to primary vertex (dca):
Due to larger c, B e has broader distribution than D e
Dca of D+ e is more close to that of B e. need more constraint.
B.R. = Branching RatioF.R. = Fragmentation Ratio
Pixel layers
dca
dca: the distance of closest approach to primary vertex
47X. DongJan. 6th, 2011 HF Workshop, Purdue
Curves: H. van Hees et al. Eur. Phys. J. C61, 799(2009).
Statistical Projections on eB Spectra
(Be) spectra obtained via the subtraction of charm decay electrons from inclusive NPEs: no model dependence, reduced systematic errors.
Need update
48X. DongJan. 6th, 2011 HF Workshop, Purdue
Dashed-curves: Assumed D0-mesom v2(pT)- in coalescence model
Symbols: D decay e v2(pT)
Vertical bars: errors for b decay e v2(pT) from 200 GeV 500M minimum bias Au + Au events
Statistical Projections on eB v2
Assuming D meson v2 from quark coalescence (curves).
r v2(eB) + (1-r) v2(eD) = v2(NPE)r is the eB/(eD+eB) ratiov2(eD) is D e v2
v2(eB) is B e v2 , which can be extracted from this equation.
Need update
49X. DongJan. 6th, 2011 HF Workshop, Purdue
1)The STAR HFT measurements (p+p and Au+Au) (1) Heavy-quark cross sections: D0,±,*, DS, C , B…
(2) Both spectra (RAA, RCP) and v2 in a wide pT region.
(3) Charm hadron correlation functions
(4) Full spectrum / v2 of the heavy quark hadron (separated) decay electrons
2) Compelling Physics
1) Establish elementary charm and bottom cross sections
2) Characterize the medium through parton energy loss
3) Determine the degree of thermalization via heavy quark flows
4) Analyze hadro-chemistry in the charm sector
5) Study the bottom behavior in medium via the separation of charm contributions
Compelling Physics with HFT
50X. DongJan. 6th, 2011 HF Workshop, Purdue
STAR HFT vs. PHENIX VTX
51X. DongJan. 6th, 2011 HF Workshop, Purdue
STAR Advantages
STAR advantages:
1) Low pT charm hadron spectrum / v2
- Thermalization, quantify medium properties: drag/difussion co-efficient2) High pT charm and electron (c,b separated) RAA
- Charm hadron RAA : the cleanest measurement - Electron channel in accessing bottom production: much better controlled systematic uncertainties benefiting from known charm spectra.
52X. DongJan. 6th, 2011 HF Workshop, Purdue
Total Charm/Bottom Cross Sections
NLO pQCD predictions of charm and bottom total cross sections per nuclear nuclear collisions.
Statistics estimated for charm cross section in p+p, Au+Au mb, Au+Au central at 200 and 500 GeV.
Statistics estimated for bottom cross section in Au+Au mb and central at 200 GeV.Systematic errors are estimated from D0 e pT shape uncertainties (open box).
53X. DongJan. 6th, 2011 HF Workshop, Purdue
PXL Risk Assessment, selected high risk examples
WBS # Description of Risk Mitigation1.2.1.1 Air cooling, new technology, high technical
riskEarly in the program carry out detailed cooling analysis, computational fluid dynamics (CFD), followed with tests using a full scale realistic prototype mock-up.
1.2.1.1 Air cooling, source of vibration, high technical risk
Early in the program carry out vibration and deformation measurements of the sector structure in the appropriate air flow stream
1.2.1.1 New sector/ladder support technology, high technical risk
Perform early FEA analysis of the structures and measure prototype structures as soon as possible to determine if the proposed design meets the requirements
1.2.2.1 Risk that aluminum cable fabrication leads to technical and schedule problems. (high risk)
Schedule float, visit vendor and work collaboratively and test production capabilities early
1.2.2.1 Risk of radiation damage to inner silicon layer. The expected yearly dose for maximum Au+ Au luminosity is 2*1011 to 1012 1 MeV n equiv/cm2 (NIEL). And 20 to 90 kRad ionizing radiation. This is comparable to tolerance levels of our detectors
Improve measurements of rad hardness and STAR radiation levels. Design for rapid replacement capability.
54X. DongJan. 6th, 2011 HF Workshop, Purdue
Prototyping Status – Sensor RDO Cables
Cable•4 step development process.•Al traces in low mass region.•Radiation Length ~ 0.073% (low mass region)•Al based cable meets X0 requirement.
Status• Defined signal paths• Schematic entry complete for preliminary FR-4 test version.
http://rnc.lbl.gov/hft/hardware/docs/Phase1/Development_PXL_flex_cable.doc
Develop flex PC readout cable (WBS 1.2.2.3)
Low mass Sensor regionDriver region
Side view (exaggerated vertical scale)
Preliminary Design: Hybrid Copper / Aluminum conductor flex cable
Low mass region calculated X0 for Al conductor = 0.073 %Low mass region calculated X0 for Cu conductor = 0.232 %
55X. DongJan. 6th, 2011 HF Workshop, Purdue
Parameters and Data Rates
PXL System
• Data rate to storage = 199 MB/sec (1kHz trigger)• 199kB / event• Meets data rate requirement.• Meets data volume requirement.
Item Number
Bits/address 20
Integration time (µs) 200
Luminosity (cm-2s-1) 8 × 1027
Hits / frame on Inner sensors (r=2.5 cm) 246
Hits / frame on Outer sensors (r=8.0 cm) 24
Final sensors (Inner ladders) 100
Final sensors (Outer ladders) 300
Event format overhead TBD
Average Pixels / Cluster 2.5
Average Trigger rate 1 kHz
56X. DongJan. 6th, 2011 HF Workshop, Purdue
Control milestones for each sub-system.
Level 1/2 Milestones
1.2 Receive Prototype sensors from IPHC Q2FY11Pixel Prototype Sector Design Complete Q4FY10Prototype Insertion mechanism Testing Complete Q2FY11Receive final Ultimate Sensors from IPHC Q1FY13Sector Assembly start Q1FY13PXL detector available for insertion Q3FY14
1.3 ISTSensor, Module and Ladder design Complete Q3FY10Prototype Modules tested Q1FY12First 3 modules produced Q3FY12Staves Finalized Q3FY13Installed on MSC, ready for installation in STAR Q1FY14
1.4 SSD Prototype Board Layout Review Q3FY10
Prototype Test on bench Q2FY11Final Design Complete Q4FY11Move Full System to STAR for test Q4FY12Ready for installation Q3FY13
1.5 Beam pipe qualification Q1FY11Beam pipe delivered and accepted at BNL Q4FY11Inner detector Support assembled with FGT Q1FY13Production OSC/MSC at BNL for integration Q2FY13Inner detector Support assembled with SSD/IST/FGT Q4FY14
1.6 SoftwareCalibration Model Developed Q2FY10Tracker/Vertex finders functional Q4FY11Reconstruction software finalized Q3FY12IST online and calibration software commissioned Q2FY13
HFT Preliminary Milestones
57X. DongJan. 6th, 2011 HF Workshop, Purdue
Cost by WBS estimated by the subsystem experts as a bottoms-up analysis for labor, material and contributed labor.
Developed high level schedule from engineering judgment, quotes, and sensor development timeline.
Currently refining schedule and cost into one resource loaded schedule using MS Project software.
Low range = cost + 0.5* contingency; high cost = cost + 1.35*contingency.
Preliminary Cost Estimate
1.1 Project Management 1002 9% 90 1047 1124
1.2 Pixel 4780 32% 1540 5550 6859
1.3 Intermediate Silicon Tracker (IST) 2650 36% 960 3130 3946
1.4 Silicon Strip Detector (SSD) 660 44% 290 805 10521.5 Integration 1380 43% 600 1680 2190
subtotal 10472 33% 3480 12212 15170Contributed Labor 2345 0 2345 2345
Total Project Cost 12817 3480 14557 17515
WBS Title CostContingency
$Low
rangeHigh
RangeContingency
%
58X. DongJan. 6th, 2011 HF Workshop, Purdue
Spin Program
59X. DongJan. 6th, 2011 HF Workshop, Purdue
Physics Run Plan
1) First run with HFT: Au+Au 200 GeV
a) v2 and Rcp of D-mesons with 500M minimum bias collisions
2) Second run with HFT: p+p 200 GeV
a) RAA of D-mesons
3) Third run with HFT: Au+Au 200 GeV high statistics
a) Systematic studies of v2 and RAA
) c baryon with sufficient statistics
c) Charm correlation / Electron pairs
60X. DongJan. 6th, 2011 HF Workshop, Purdue
The Inner vertex tracking upgrade was identified as a critical component soon after the start of RHIC and developed into proposal and R&D projects within STAR.
Reviewed by BNL Detector Advisory Committee in March 2005 and included in the RHIC detector upgrade mid-term plan.
Reviewed by BNL Technical Advisory Committee in January 2007 and proceeded with preparation of CD-0 proposal and submission
February 2008 CD-0 review Report received Jan 2009; CD-0 approval February 2009. March/April 2009 Research Management Plan and response to CD-0
report submitted to DOE.
November 2009 CD-1 review and CDR submission Report received soon after, preparing response to committee. Will be real construction project with CD-1 signed shortly. Working on preparation for CD-2/3.
Project History and Status
61X. DongJan. 6th, 2011 HF Workshop, Purdue
(Optimistic) Schedule
Completion aimed for run-14 with pixel detector available.- Require more funds in FY-11
CD-2/3 in fall 2010 Pixel prototype (3 sectors out of 10) and initial assembly with IDS
completed before Run-12 HFT Engineering run - RHIC Run - 12 Pixel detector available for RHIC Run - 14 (High luminosity AuAu run)
- Pixel + SSD + mechanical supportsFull HFT system installed for RHIC Run - 15
- IST
62X. DongJan. 6th, 2011 HF Workshop, Purdue
BNL Project management, integration, safety, SSD electronic upgrade
LBNL PXL detector, Global support, SSD, integration, Software
MIT IST detector
IPHC Sensor development
SUBATECH Engineering for SSD readout
UT Austin PXL readout.
Kent State, UCLA, Purdue, NPI, CTU Lead Software development
Collaboration and Responsibilities
63X. DongJan. 6th, 2011 HF Workshop, Purdue
Importance to RHIC Beam Energy Scan
One important task at RHIC top energy heavy ion programTest the system thermalization and quantify the degree
RHIC Beam Energy Scan (BES) programSearch for the 1st-order phase boundarySearch the critical point of QCD phase diagram
Thermalization is one assumption in proposed signatures.
64X. DongJan. 6th, 2011 HF Workshop, Purdue
Muons: Penetrating Probes
The initial temperature of sQGP; the mass origin of hadrons;
color screening features of heavy quarkonia … Measurements Physics
low mass di-muons thermal radiation of QGP;
in-medium modifications of vector meson ( ), chiral symmetry restoration
intermediate mass di-muons thermal radiation of QGP;
heavy flavor modification; resonances in sQGP
large mass: heavy quarkonia T of QGP, color screening, quarkonium production mechanism
65X. DongJan. 6th, 2011 HF Workshop, Purdue
Comments on Simulations
Simulations Conditions
Efficiency of single muon and J/ Include TPC tracking efficiency, MTD acceptance, matching between TPC and MTD
J/ and signal versus background
J/, RAA, v2 projection
µ-e correlations
Signal from STAR measurements;
Inclusive muons: reconstructed from prototype performance from Runs 7-8, track matching included, tof cut is not applied
66X. DongJan. 6th, 2011 HF Workshop, Purdue
High Mass Di-muon Capabilities
1. J/: S/B=6 in d+Au and S/B=2 in central Au+Au
2. With HFT, study BJ/ X; J/ using displaced vertices
3. Excellent mass resolution: separate different upsilon states
Heavy flavor collectivity and colorscreening, quarkonia production mechanisms:J/ RAA and v2; upsilon RAA …
Quarkonium dissociation temperatures – Digal, Karsch, Satz
Z. Xu, BNL LDRD 07-007; L. Ruan et al., Journal of Physics G: Nucl. Part. Phys. 36 (2009) 095001
67X. DongJan. 6th, 2011 HF Workshop, Purdue
The details for the R&D modules
Conditions Modules and readout
Cosmic ray and Fermi-lab T963 beam tests double stacks,
module size: 87(z)17() cm2,
Performance: 60 ps, ~0.6 cm at HV 6.3 kV
Run 7: Au+Au
Run 8: p+p, d+Au
double stacks, 2 modules in a tray, module size: 87(z)17() cm2,
Readout: trigger electronics,
Time resolution: 300 ps
Run 9: p+p
Run 10: Au+Au, cosmic ray
double stacks, 3 modules in a tray, module size: 87(z)17() cm2,
Readout: TOF electronics; trigger electronics for trigger purpose.
Run 11 single stack, 1 module in a tray, module size: 87(z)52() cm2,
Readout: TOF electronics; trigger electronics for trigger purpose,
Cosmic ray test performance: <100 ps
68X. DongJan. 6th, 2011 HF Workshop, Purdue
Trigger Capability with MTD Acceptance
RHIC II lumonisity in terms of collision rate: 40 k Hz; Au+Au projection: based on Run 10 prototype performance.
Run10 Au+Au
B. Huang, USTC
L0 trigger timing resolution (assumed)
di-muon trigger efficiency of the timing
cut
140 ps 3.6σ (100%)
200 ps 2.5σ (98%)
300 ps 1.7σ (80%)
1 ns trigger window: 80 Hz for dimuon trigger
69X. DongJan. 6th, 2011 HF Workshop, Purdue
Delivered luminosity: 2013 projected;Sampled luminosity: from STAR operation performance
Collision system
Delivered lumi.
12 weeks
Sampled lumi.
12 weeks (70%)
Υ counts Min. lumi.
precision on
Υ (3s) (10%)
Min. lumi.
precision on
Υ (2s+3s) (10%)
200 GeV p+p
200 pb-1 140 pb-1 390 420 pb-1 140 pb-1
500 GeV p+p
1200 pb-1 840 pb-1 6970 140 pb-1 50 pb-1
200 GeV Au+Au
22 nb-1 16 nb-1 1770 10 nb-1 3.8 nb-1
Upsilon Statistics
70X. DongJan. 6th, 2011 HF Workshop, Purdue
Organization
MTD group: Brookhaven National Laboratory: L. Ruan, Z. Xu, K. Asselta, W. Christie, C. D’Agostino, J.
Dunlop, J. Landgraf, T. Ljubicic, J. Scheblein, R. Soja, A.H. Tang, T. Ullrich University of California, Berkeley: H.J. Crawford, J. Engelage University of California, Davis: M. Calder′on de la Barca S′anchez, R. Reed, H.D. Liu Rice University: J. Butterworth, G. Eppley, F. Geurts, W.J. Llope, D. McDonald, T.
Nussbaum, J. Roberts, K. Xin, L. Bridges University of Science & Technology of China: H.F. Chen, B.C. Huang, C. Li,
M. Shao, Y.J. Sun, Z.B. Tang, X.L. Wang, Y.C. Xu, Z.P. Zhang, H. Zeng,
Y. Zhou Texas A&M University: Y. Mohammed, S. Mioduszewski University of Texas, Austin: A. Davila, G.W. Hoffmann, L. Li, C. Markert, L.
Ray, J. Schambach, D. Thein, M. Wada Tsinghua University: J.P. Chen, K.J. Kang, Y.J. Li, Y. Wang, X.L. Zhu Variable Energy Cyclotron Centre: Z. Ahammed, P.P. Bhaduri, S.
Chattopadhyay, A.K. Dubey, M.R. Dutt-Mazumdar, P. Ghosh, S.A. Khan,
S. Muhuri, B. Mohanty, T.K. Nayak, S. Pal, R. Singaraju, V. Singhal, P.
Tribedy, Y.P. Viyogi
71X. DongJan. 6th, 2011 HF Workshop, Purdue
Q4(FY09)
Q1-2(FY10)
Q3-4(FY10)
Q1-2(FY11)
Q3-4(FY11)
Q1-2(FY12)
Q3-4(FY12)
Q1-2(FY13)
Q3-4(FY13)
Q1 (FY14)
MRPC Module
Proposal Design
US MTD Constru.
Electronics
Tray
Install/Commission
Physics Data
MTD Schedule
Finish the project by Sep, 2013 and make the full system ready for year 2014 run
Design
Design
Design
Production
Production
Production